<?php
/**
 * Ueditor插件
 * @author Nintendov
 */

namespace com;

class Ueditor {

	public $uid; //要操作的用户id 如有登录需要则去掉注释
	private $output; //要输出的数据
	private $st;
	private $rootpath = '/uploads';
	private $config   = '';

	public function __construct($uid = '') {
		//uid 为空则导入当前会话uid
		if ('' === $uid) {
			$this->uid = session('user_auth.uid');
		}

		//导入设置
		$this->config = json_decode(preg_replace("/\/\*[\s\S]+?\*\//", "", file_get_contents(APP_PATH . "ueditor.json")), true);

		$action = htmlspecialchars($_GET['action']);

		switch ($action) {
		case 'config':
			$result = json_encode($this->config);
			break;

		case 'uploadimage':
			$config = array(
				"pathFormat" => $this->config['imagePathFormat'],
				"maxSize"    => $this->config['imageMaxSize'],
				"allowFiles" => $this->config['imageAllowFiles'],
			);
			$fieldName = $this->config['imageFieldName'];
			$result    = $this->uploadFile($config, $fieldName);
			break;

		case 'uploadscrawl':
			$config = array(
				"pathFormat" => $this->config['scrawlPathFormat'],
				"maxSize"    => $this->config['scrawlMaxSize'],
				"allowFiles" => $this->config['scrawlAllowFiles'],
				"oriName"    => "scrawl.png",
			);
			$fieldName = $this->config['scrawlFieldName'];
			$result    = $this->uploadBase64($config, $fieldName);
			break;

		case 'uploadvideo':
			$config = array(
				"pathFormat" => $this->config['videoPathFormat'],
				"maxSize"    => $this->config['videoMaxSize'],
				"allowFiles" => $this->config['videoAllowFiles'],
			);
			$fieldName = $this->config['videoFieldName'];
			$result    = $this->uploadFile($config, $fieldName);
			break;

		case 'uploadfile':
			// default:
			$config = array(
				"pathFormat" => $this->config['filePathFormat'],
				"maxSize"    => $this->config['fileMaxSize'],
				"allowFiles" => $this->config['fileAllowFiles'],
			);
			$fieldName = $this->config['fileFieldName'];
			$result    = $this->uploadFile($config, $fieldName);
			break;

		case 'listfile':
			$config = array(
				'allowFiles' => $this->config['fileManagerAllowFiles'],
				'listSize'   => $this->config['fileManagerListSize'],
				'path'       => $this->config['fileManagerListPath'],
			);
			$result = $this->listFile($config);
			break;

		case 'listimage':
			$config = array(
				'allowFiles' => $this->config['imageManagerAllowFiles'],
				'listSize'   => $this->config['imageManagerListSize'],
				'path'       => $this->config['imageManagerListPath'],
			);
			$result = $this->listFile($config);
			break;

		case 'catchimage':
			$config = array(
				"pathFormat" => $this->config['catcherPathFormat'],
				"maxSize"    => $this->config['catcherMaxSize'],
				"allowFiles" => $this->config['catcherAllowFiles'],
				"oriName"    => "remote.png",
			);
			$fieldName = $this->config['catcherFieldName'];
			$result    = $this->saveRemote($config, $fieldName);
			break;

		default:
			$result = json_encode(array(
				'state' => 'wrong require',
			));
			break;

		}

		if (isset($_GET["callback"])) {
			if (preg_match("/^[\w_]+$/", $_GET["callback"])) {
				$this->output = htmlspecialchars($_GET["callback"]) . '(' . $result . ')';
			} else {
				$this->output = json_encode(array(
					'state' => 'callback参数不合法',
				));
			}
		} else {
			$this->output = $result;
		}
	}

	/**
	 *
	 * 输出结果
	 * @param data 数组数据
	 * @return 组合后json格式的结果
	 */
	public function output() {
		return $this->output;
	}

	/**
	 * 上传文件方法
	 *
	 */
	private function uploadFile($config, $fieldName) {
		$file = request()->file('upfile');
		if (is_array($config['allowFiles'])) {
			$config['allowFiles'] = str_replace('.', '', implode(',', $config['allowFiles']));
		}else{
			$config['allowFiles'] = '';
		}
		$info = $file->validate(array('size'=>$config['maxSize'], 'ext'=>$config['allowFiles']))->move($config['pathFormat'], true, false);

		if ($info) {
			$data = array(
				'state'    => "SUCCESS",
				'url'      => str_replace("\\", '/', substr($info->getPathname(), 1)),
				'title'    => $info->getSaveName(),
				'original' => $info->getFilename(),
				'type'     => '.' . $info->getExtension(),
				'size'     => $info->getSize(),
			);
		} else {
			$data = array(
				"state" => $file->getError(),
			);
		}
		return json_encode($data);
	}

	/**
	 *
	 * Enter description here ...
	 */
	private function uploadBase64($config, $fieldName) {
		$data = array();

		$base64Data = $_POST[$fieldName];
		$img        = base64_decode($base64Data);
		$path       = $this->getFullPath($config['pathFormat']);

		if (strlen($img) > $config['maxSize']) {
			$data['states'] = 'too large';
			return json_encode($data);
		}

		$rootpath = $this->rootpath;

		//替换随机字符串
		$imgname  = uniqid() . '.png';
		$filename = $path . $imgname;

		if (\Think\Storage::put($rootpath, $filename, $img)) {
			$data = array(
				'state'    => 'SUCCESS',
				'url'      => $rootpath . $filename,
				'title'    => $imgname,
				'original' => 'scrawl.png',
				'type'     => '.png',
				'size'     => strlen($img),

			);
		} else {
			$data = array(
				'state' => 'cant write',
			);
		}
		return json_encode($data);
	}

	/**
	 * 列出文件夹下所有文件，如果是目录则向下
	 */
	private function listFile($config) {
		$allowFiles = substr(str_replace(".", "|", join("", $config['allowFiles'])), 1);
		$size       = isset($_GET['size']) ? htmlspecialchars($_GET['size']) : $config['listSize'];
		$start      = isset($_GET['start']) ? htmlspecialchars($_GET['start']) : 0;
		$end        = $start + $size;

		$rootpath = $this->rootpath;

		$path  = $config['path'];
		$files = \Think\Storage::listFile($rootpath, $path, $allowFiles);
		//return $files;
		if (!count($files)) {
			return json_encode(array(
				"state" => "no match file",
				"list"  => array(),
				"start" => $start,
				"total" => count($files),
			));
		}

		/* 获取指定范围的列表 */
		$len = count($files);
		for ($i = min($end, $len) - 1, $list = array(); $i < $len && $i >= 0 && $i >= $start; $i--) {
			$list[] = $files[$i];
		}
		//倒序
		//for ($i = $end, $list = array(); $i < $len && $i < $end; $i++){
		//    $list[] = $files[$i];
		//}

		/* 返回数据 */
		$result = json_encode(array(
			"state" => "SUCCESS",
			"list"  => $list,
			"start" => $start,
			"total" => count($files),
		));

		return $result;
	}

	/**
	 *
	 * Enter description here ...
	 */
	private function saveRemote($config, $fieldName) {
		$list = array();
		if (isset($_POST[$fieldName])) {
			$source = $_POST[$fieldName];
		} else {
			$source = $_GET[$fieldName];
		}
		foreach ($source as $imgUrl) {
			$upload = new \org\Upload();

			$imgUrl = htmlspecialchars($imgUrl);
			$imgUrl = str_replace("&amp;", "&", $imgUrl);

			//http开头验证
			if (strpos($imgUrl, "http") !== 0) {
				$data = array('state' => '不是http链接');
				return json_encode($data);
			}
			//格式验证(扩展名验证和Content-Type验证)
			$fileType = strtolower(strrchr($imgUrl, '.'));
			if (!in_array($fileType, $config['allowFiles']) || stristr($heads['Content-Type'], "image")) {
				$data = array("state" => "错误文件格式");
				return json_encode($data);
			}

			//打开输出缓冲区并获取远程图片
			ob_start();
			$context = stream_context_create(
				array('http' => array(
					'follow_location' => false, // don't follow redirects
				))
			);
			readfile($imgUrl, false, $context);
			$img = ob_get_contents();
			ob_end_clean();
			preg_match("/[\/]([^\/]*)[\.]?[^\.\/]*$/", $imgUrl, $m);

			$path = $this->getFullPath($config['pathFormat']);
			if (strlen($img) > $config['maxSize']) {
				$data['states'] = 'too large';
				return json_encode($data);
			}

			$rootpath = $this->rootpath;

			$imgname  = uniqid() . '.png';
			$filename = $path . $imgname;

			$oriName = $m ? $m[1] : "";

			if (\Think\Storage::put($rootpath, $filename, $img)) {
				array_push($list, array(
					"state"    => 'SUCCESS',
					"url"      => \Think\Storage::getPath($rootpath, $filename),
					"size"     => strlen($img),
					"title"    => $imgname,
					"original" => $oriName,
					"source"   => htmlspecialchars($imgUrl),
				));
			} else {
				array_push($list, array('state' => '文件写入失败'));
			}
		}

		/* 返回抓取数据 */
		return json_encode(array(
			'state' => count($list) ? 'SUCCESS' : 'ERROR',
			'list'  => $list,
		));
	}

	/**
	 * 规则替换命名文件
	 * @param $path
	 * @return string
	 */
	private function getFullPath($path) {
		//替换日期事件
		$t      = time();
		$d      = explode('-', date("Y-y-m-d-H-i-s"));
		$format = $path;
		$format = str_replace("{yyyy}", $d[0], $format);
		$format = str_replace("{yy}", $d[1], $format);
		$format = str_replace("{mm}", $d[2], $format);
		$format = str_replace("{dd}", $d[3], $format);
		$format = str_replace("{hh}", $d[4], $format);
		$format = str_replace("{ii}", $d[5], $format);
		$format = str_replace("{ss}", $d[6], $format);
		$format = str_replace("{uid}", $this->uid, $format);

		return $format;
	}

	private function format_exts($exts) {
		$data = array();
		foreach ($exts as $key => $value) {
			$data[] = ltrim($value, '.');
		}
		return $data;
	}

}
